package cn.leedsoft.luma.test;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;

/**
 * Created by leeds on 2016/11/11 15:48.
 */
public class RequestUtil {
    public static boolean isAjax(HttpServletRequest request) {
        String x = request.getHeader("x-requested-with");
        if(x != null && x.equalsIgnoreCase("XMLHttpRequest")) {
            return true;
        }
        return  false;
    }

    public static String getIP(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
            //多次反向代理后会有多个ip值，第一个ip才是真实ip
            int index = ip.indexOf(",");
            if(index != -1){
                return ip.substring(0,index);
            }else{
                return ip;
            }
        }
        ip = request.getHeader("X-Real-IP");
        if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
            return ip;
        }
        return request.getRemoteAddr();
    }


}
